Pain

(Science: symptom) An unpleasant sensory and emotionalexperienceassociated with actual or potentialtissuedamage or described in terms of such damage.
A somatic sensation of acute discomfort; as the intensity increased the sensation changed from tickle to pain.A sensation brought about by pain receptors in the body which transmit electrical signals to the brain. Pain receptors have a protective function, e.g. standing on hot coals would notify the organism at hand to move to a safer place because of the danger .
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